Quantitative analysis of energy consumption for cylinder efficiency of a Shanghai electric _ siemens ultra-supercritical 660 MW steam turbine unit

2018 International Conference on New Energy and Future Energy System

Wang, B.^1 ; Zhao, Y.Z.^1

Steam Turbine and Gas Turbine Technical Department, Huadian Electric Power Research Institute, Zhejiang Province Hangzhou

310030, China^1

关键词: Conservation management;    Development directions;    High-pressure cylinders;    Intermediate pressures;    Low-pressure cylinder;    Power generation technology;    Quantitative sensitivity;    Supercritical 660 mw steam turbines;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/188/1/012090/pdf
DOI  :  10.1088/1755-1315/188/1/012090

来源: IOP

【 摘 要 】

The Shanghai Electric - Siemens ultra-supercritical 660 MW steam turbine has a large proportion in the newly produced 600 MW units in China in recent years because of its superior performance index. It has become an important development direction of 600 MW level ultra-supercritical power generation technology. Taking a N660-25/600/600 steam turbine as an example, the quantitative sensitivity analysis of energy consumption of the high-pressure cylinder, intermediate-pressure cylinder and low-pressure cylinder were carried out based on the calculation method of rated power and variable condition, the influence of each cylinder efficiency change on the heat consumption rate of steam turbine is obtained. It turns out that the efficiency of high-pressure cylinder is less sensitive to energy consumption, the efficiency of intermediate-pressure cylinder is second, and the efficiency of low-pressure cylinder is more sensitive to energy consumption. The conclusion can provide technical reference for energy conservation diagnosis and energy conservation management and evaluation on this type of steam turbine.